Jarrett- you might find interest in recent artwork of my good friend, Matthew Picton. Matthew has explored many aspects of geography and urban form through his art, but his most recent set of City Sculptures capture scale features of urban form, often focusing on street and rail networks. These three dimensional pieces are made by tracing various map features, so do represent a scale model of a limited subset of urban features. Most represent a city at point in time, but in others he's captured temportal changes in urban form. They may not be as practical in professional application, but they are a lot of fun to view. http://www.matthewpicton.com/default.asp Cheers, Tom Brennan